列竖式计算． 238÷6= 566÷5= 980÷7=
1--
口算。+=-=+=-+= 0.63×1000= 0. 75-0.25= 0.07+0.03= 0. 9÷0.03= 0.4×0.8=
×=÷3=÷=－= 3÷15=＋0.25= 1÷= 85%－15%= 10÷10%= 5×÷5×=
脱式计算下面各题。 4÷-0.6×÷ （+）÷÷[1÷(-)]
÷＋×
-
+
=
-
=
=
-
+
=
×
=
÷3=
÷
=
－
÷5×
-0.6
×
÷
+
）÷
÷[1÷(
-
)]
÷
＋
×
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